availability) Series connection (luminaire goes off)
In the commercial section and the field street
lighting, with long lifespans, enormous cost savings
are possible, despite the increased procurement
price.
Failure behaviour:
The display the ÜSM-LED goes out. This
guarantees the lifespan the LED luminaires, secur-
ing the investment.TBS
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2018
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Parallel connection
The surge protection device located upstream of
the LED luminaire.
L
N
PE
L
L'
LED/
end
device
L
L
L'
N
PE
end
LED/
device
L Phase feed line
L`
Phase from the protection device
(switch-off case failure)
PE Earth
N Neutral conductor
LED Luminaire
L Phase feed line
L`
Phase from the protection device
(switch-off case failure)
PE Earth
N Neutral conductor
LED Luminaire
Parallel connection (max. suitable
protection device upstream the electronic LED
drivers safe barrier against surge voltages.
Series connection
The surge protection switched series the LED
luminaire. The fail-
ure signalled the luminaire going out. The investments can protected through
suitable protection measures. The surge pro-
tection disconnected. However, premature failure from surge voltage
damage can push the return investment back into
the future.
TBS
Blitzschutz-Leitfaden
2018
/
en
/
2020/01/10
14:42:40
14:42:40
(LLExport_02613)
/
2020/01/10
14:42:54
14:42:54
215
Chapter The internal lightning protection system
.
Failure behaviour:
The display the ÜSM-LED goes out. The surge pro-
tection and the circuit (L') are disconnected. The LED luminaire remains lit
without protection
